On the left side of the equation is one or more response variables, Y. On the right hand side is one or more predictor variables, X, and their coefficients, B. X, the variables on the right hand side can have many forms and are called by many names.
Subscribe to our Digestive Health e-newsletter to stay up to date on digestive health topics. The exact cause of ulcerative colitis remains unknown. Previously, diet and stress were suspected, but now doctors know that these factors may aggravate but don't cause ulcerative colitis.One possible cause is an immune system malfunction.reviously, diet and stress were suspected, but now doctors know that these factors may aggravate but don't cause ulcerative colitis.
Causes of inflammatory bowel disease. The exact causes of ulcerative colitis and Crohnâs disease are unclear. Itâs thought that several factors may play a part, such as: 1  genetics â there is evidence that you are more likely to develop IBD if you have a close relative with the condition.auses of inflammatory bowel disease. The exact causes of ulcerative colitis and Crohnâs disease are unclear. Itâs thought that several factors may play a part, such as: 1  genetics â there is evidence that you are more likely to develop IBD if you have a close relative with the condition.